Spinning-roll.



E. KEMPSHALL.

SPINNING ROLL.

APPLICATION FILED MAR. 3, 1913.

1,074,505, Patented Sept.30, 1913.

-, Toall-wlmmit may concern:

UNITED STATES PATENT OFFICE.

ELEAZER KEMPSHALE, OF NEW YORK, N. Y ASBIGNOB '10 KEMPSHALL SUPPLY- COMPANY, 'A CORPORATION 0]? NEW JERSEY.

Be it known that I, ELEAZER KEMrsiIALL, Citizen of the United States, residing at New York. in the county of New York and State of New York, have invented certain new and useful. Improvements .in Spinning- Rolls; and I do hereby declare the follow-- ing to be a full, clear, and exact description of the invention, such; as will enable others skilled in the art to which it appertains to make and use the same, reference being had 'to theaecompanying.drawings, and to letters orfigures of reference marked thereon, which form a part of this spec ficatipn.

ThlS IIIVGIII-IOII relates to 1mprovement-s 1n composite cots or covers for spinningrolls,

and-the me'thodo'f making the same. The ob ect of the invention 15- to provide a composite cot composed'of an outer tubuslighlly greater than the inner diameter of lar binder of leathcran'd. an inner soft rub her tube, the initial diameter of'which 1s the leather binder, to provide a means for securing'the leather a'nd rubber together,

so that when the cot is slipped or forced on the hard roll, the cot will be frictionally held in operative position.

Another object ofthis invention is to pro-.

vide an improved method of producing the cot. I

I am aware it is old-in the art to'form a oot of rubber and leather for a spinning roll,

but in each instance known tome the rubher is vulcanized to the roll, and the leather is rolled on the rubber, while others employ cement for binding the elements together.

However, all such attempts are impractical from a commercial and practical standpoint, as they involve u'ndue expense, and loss of time in afiixing the'eots to the rolls.

So far as I am aware, no attempts have been made to first form the leather into an endless tube of a determinate diameter, and

then fit the rubber tube in the leather, and

ments in the construction and arrangement of partswhich will be hereinafter described,

and particularly pointed out in the claim.

In the drawings: Figure 1 is a perspective Specification. otletters l'atont. Application filed March 3, 1813, Serial No. 751,898.

srmnmaaonr.

Patented Sept. 30,1913.

view of my improved spinning roll cot. Fig. 2 1s a similar View of the inner soft rubber tube. outerleather tubular binder. Fig. 4 is a similar view illustrating one of the steps n themethod of forming the cot. Fig. 5 roll provutl ed with one of my improve composite c0 s.

The numeral 1 indicates a' soft rubber tube, and 2, an outer tubular leather binder which fitsover the soft rubber tube. The

rubber tube is vulcanized and preferably reinforced before it is applied to a roll, and before it is 'fitted with the leather binder. The initial diameter of the soft rubber tube is slightly greater than the in-.

terior diameter, of the tubular leather binder, so that when the leather tube is fitted to the'soft rubber tube the expansive Fig. 3 is a similar view of the i resilience oiLthe rubber against the leather will serve to secure the two elements together. Thus'the composite cot is wholly made up, and the parts frictionally united to each other rior to being placed on a spinning roll. 1y thus forming the cot, the diameter of a rol is predetermined by'the binder, for the latter is made in tubular form prior to assemblin same with the rubber tube, and because 0 the initial diameter of the rubber being a trifle greater than the inner diameter of the leather, the rubber becomes compressed and the thin leather tuberis stretched tightly around the rubber.

The.friction created between the rubber and leather is'increased by confining and consequent compression of the. rubber, hence the two elements are for all practical purposes so intimately associated with each other as to form one yielding body.

It is my purpose to so produce the composite cot thatitcan be conveniently applied to a roll in a mill by unskilled labor. Hence it is of the utmostimportance that the leather and rubberbe assembled to form a unit, so that when a cot becomes worn, no

great amount of time and expense is incurred in supplying a new one.

The internal diameter of the rubber tube is slightly less than the external diameter of the hard roll 5, as shown by the dotted lines 6, in Fig. 5, consequently the rubber tube is slightly stretched and is also slightly radially expanded, the dotted'lines 5 connecting Figs. 2 and -3 indicating the relative due to the fact t Then the rubber tube is sizes of the tubes." I take advantage ofth'e relative p'ro ortions'of the roll and the rubber tube, to orm a means of securing thelcot inoperative position. The roll is' sllg tly corrugated as shown at 8, so that'when forcing the cotson the roll, the rubber becomes embedded in the rooves of the corrugations,

fiat the radial ex ahsion is limited by the tubular leather bin er. Thus when a cot is forced on a roll, the rubber'is compressed between the leather and the "corrugated surface, which accom lishes ardual result, to wit -The rubber grips the corrugated surface, and the tension on the tubular leather binder is materially increased, for it is further stretched over the outer periphery of the rubber.

In the method of forming m com osite cot, I provide a tubular leat er binder, formed from a flat strip, the ends bemg brought together and cemented. I also provide a soft rubbertube of slightly greater diameter than the interior diameter of the leather tube, and in fitting the tubes together, the softrubber is creased or folded to fit in the leather tube, as shown in Fig. 4. permitted to expand to its normal sha e wit in the leather, and the latter, whic is very thin, becomes stretched over the outer surface of the rubber and frictionally engages therewith.

I lay-great stress onthe fact that'the rubbertube is vulcanized before it is associated with either the leather tube, or the spinning roll, and I also emphasize the fact that the rubber and leather tubes are fitted over each other as an articleof manufacture before applying the cotto the roll, for it is by this means I am enabled to absolutely make cots of uniform diameter.

From experience it has been demonstrated; that to attempt to roll or apply a flat strip of leather to the rubber, either before or after itsapplication to a roll, is both expensive and im ractical',particularly in so far as being ab e cobbtain a perfectly smoot and progerl stretched leatherfsurface 'g concerne Therefore, I find it of first 1m portance to first make the leather binder in fl tubular form before placing same on that!) rubber tuber This is true for two reasons: Q I First, I am able to accurately determine the diameter of the cot, and second, it affords the only successful and practical. method of pro erly stretching the leather to obtain a; 56 per ectly smooth and evensurface. A cot I constructed as described is frictionally held on the roll, and the elements constituting the cot are frictionally held to each other, consequently the cots can be economically manu- 60 factured. J After the cot isap liedto aKroll, I may run a hot tool around the edges, to embed the leather in the rubber.

What I claim is: As' a new article of manufacture, a composite cot fora spinning roll comprising a tubular leather binder and a previously vulcanized soft rubber tube'fitted within the leather tube and havin' an initial exterior diameter greater than t e interior diameter of the leather tube, whereby theexpansive resilience of the rubber t e against the inner surface of the tub ar leather binder serves to form a means, for securin .the leather to the soft rubber tube, the tu ular leather binder determining the diameter of the cot. I In testimony whereof I have signed my name to this specification in the presence of 80 two subscribing witnesses. Y

ELEAVZER YKEMPSHAIHJL.

Witnesses EMILY F. CAMP,

J r10. IMmm;

et I 

